[NXP] Moving NXP Matter SDK support files to a dedicated nxp_matter_support repo

Signed-off-by: Gatien Chapon <gatien.chapon@nxp.com>

Author: chapongatien

build_overrides/nxp_sdk.gni

@@ -14,5 +14,9 @@
 
 declare_args() {
   # Root directory for NXP SDKs.
-  nxp_sdk_build_root = "//third_party/nxp"
+  nxp_sdk_matter_support_root = "//third_party/nxp/nxp_matter_support"
+}
+
+declare_args() {
+  nxp_sdk_build_root = "${nxp_sdk_matter_support_root}/gn_build"
 }

examples/all-clusters-app/nxp/rt/rw61x/BUILD.gn

@@ -49,7 +49,8 @@ declare_args() {
   setup_discriminator = 3840
 }
 
-example_platform_dir = "${chip_root}/examples/platform/nxp/${nxp_platform}"
+example_platform_dir =
+    "${nxp_sdk_matter_support_root}/examples/platform/${nxp_platform}"
 common_example_dir = "${chip_root}/examples/platform/nxp/common"
 
 if (tcp_download == true && wifi_connect == true) {

examples/build_overrides/nxp_sdk.gni

@@ -14,5 +14,10 @@
 
 declare_args() {
   # Root directory for NXP SDKs.
-  nxp_sdk_build_root = "//third_party/connectedhomeip/third_party/nxp"
+  nxp_sdk_matter_support_root =
+      "//third_party/connectedhomeip/third_party/nxp/nxp_matter_support"
+}
+
+declare_args() {
+  nxp_sdk_build_root = "${nxp_sdk_matter_support_root}/gn_build"
 }

examples/laundry-washer-app/nxp/rt/rw61x/BUILD.gn

@@ -49,7 +49,8 @@ declare_args() {
   setup_discriminator = 3840
 }
 
-example_platform_dir = "${chip_root}/examples/platform/nxp/${nxp_platform}"
+example_platform_dir =
+    "${nxp_sdk_matter_support_root}/examples/platform/${nxp_platform}"
 common_example_dir = "${chip_root}/examples/platform/nxp/common"
 
 if (tcp_download == true && wifi_connect == true) {